Question

The enolic form of acetone contains

• A. 9 sigma bonds, 1 pi bond and 2 lone pairs
• B. 8 sigma bonds, 2 pi bonds and 2 lone pairs
• C. 10 sigma bonds, 1 pi bond and 1 lone pair
• D. 9 sigma bonds, 2 pi bonds and 1 lone pair

Answer 1

Answer: (A)

9 sigma bonds, 1 pi bond and 2 lone pairs

Answer 2

$CH_{3} - \overset{\overset{{}_{\bullet}^{\bullet}\overset{\bullet \mspace{6mu}\mspace{6mu} \bullet}{O} - H}{|}}{C = CH_{2}}$ has 9σ, 1π and 2 lone pairs.